Variant of avian flu hit Hong Kong waiting in the wings! #h5n1 #birdflu

Fear of failure of the vaccine and then variants of avian

Variant of avian flu hit Hong Kong waiting in the wings!「2.3.2.1」，。

Shenzhen Baoan District bus drivers infection with the H5N1 avian influenza virus infection in dead birds in Hong Kong last year, a new virus belong to branches of "2.3.2.1", display variant of avian influenza virus had reached Hong Kong.
Hong Kong microbiologist warning, H5 bird flu virus has evolved to the fifth-generation, antigenic drift occurs, the local chicken farmers worried about the current use of the vaccine product of the eighties the Netherlands, anti-viral effectiveness of the new skeptical.。
Experts suggest that the Government strengthen the monitoring of the new virus lineages in the next six months, and if the mainstream, must be converted chicken vaccine to prevent bird flu variant outbreak in Hong Kong.

Shenzhen CDC respiratory samples taken after the deceased, shows that the virus mutation, the sequence is "2.3.2.1", earlier in Yuen Long in Hong Kong picked up dead birds tested positive for the virus, and two ○ 一○ the discovery of human infection avian influenza viruses are similar, reflecting the variety of bird flu has already invaded Hong Kong.

H5 avian influenza virus constantly changes during the past decade, the latest discovery of the virus branches "2.3.2.1" is already the fifth generation, the Hong Kong University infection and infectious disease center director, warned yesterday Ho Pak-leung ︰ "avian influenza virus through four gene variants, there have been antigenic drift, that is, changes in viral surface proteins, or reduce vaccine effectiveness, the use of chickens in Hong Kong Netherlands vaccine is a product of the eighties, to be against the first three generations of the virus, but the virus has evolved to the fifth generation, protection doubtful. "

Harbin vaccine intended for Vietnam

Ho Pak-leung means, "2.3.2.1" a year ago in parts of Asia such as Vietnam, and the virus has become mainstream, even if the local chickens were injected vaccine Netherlands, but also large-scale outbreak, local farms are considering the conversion of Harbin vaccine.
。 He warned that if the neighboring regions or Hong Kong in the next six months, have been discovered dead birds or chickens infected "2.3.2.1", or the virus into the mainstream, the Government need to replace the vaccine, the vaccine Harbin switch to the mainland.

University of Hong Kong, Professor Yuen Kwok-yung said the Department of Microbiology, chickens are not as human vaccines like influenza vaccine each year trend of conversion by virus vaccine formulations. Dutch vaccine use in Hong Kong has long been the avian flu virus the body will naturally in chickens a "survival of the fittest" situation, gradually evolved out of the vaccine virus can not be suppressed, the chickens must be constant monitoring of existing vaccines against the force of the pandemic virus.

Hong Kong tests more than a year not later

Chicken farm in Yuen Long in Hong Kong since ○ 八年 after the death of a large number of chickens, chicken farmers and experts question the power of the Dutch vaccine protection decreased, AFCD ○ 年 一月 respectively, in a medium-sized and small farms test Harbin vaccine. It is reported that the trial period, no abnormal chicken deaths. AFCD original account of the results of last November, has not so far below.
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